A 3-year-old boy named Acen King was shot and killed in a road rage incident last weekend while on a shopping trip with his grandmother and little brother in Little Rock, police told reporters. The shooter’s motive, evidently, was anger that King’s grandmother wasn’t driving fast enough.

The boy’s grandmother, Kim King-Macon, was stalled at a stop sign when the driver of a black 2003 Chevy Impala honked at her. When she honked back, the driver left his car and started shooting at King-Macon’s vehicle.

The grandmother drove away without injury, thinking that the other driver had just fired a “warning shot” into the air, and without realizing initially that King had been hit by a bullet at least once. Responders took the boy to a hospital, where he died within hours.

The shooter is still at large. Police and FBI are offering a combined $40,000 reward for information leading to the assailant’s arrest and conviction.

“That is very, very frustrating to our police agency as it should be to our community,” Little Rock police chief Kenton Buckner said. “We cannot have a community where the least protected among us, being infants, are dying [in] senseless crimes.”

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